| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <numeric> |
| |
| // template <InputIterator Iter, MoveConstructible T> |
| // requires HasPlus<T, Iter::reference> |
| // && HasAssign<T, HasPlus<T, Iter::reference>::result_type> |
| // T |
| // accumulate(Iter first, Iter last, T init); |
| |
| #include <numeric> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| |
| template <class Iter, class T> |
| void |
| test(Iter first, Iter last, T init, T x) |
| { |
| assert(std::accumulate(first, last, init) == x); |
| } |
| |
| template <class Iter> |
| void |
| test() |
| { |
| int ia[] = {1, 2, 3, 4, 5, 6}; |
| unsigned sa = sizeof(ia) / sizeof(ia[0]); |
| test(Iter(ia), Iter(ia), 0, 0); |
| test(Iter(ia), Iter(ia), 10, 10); |
| test(Iter(ia), Iter(ia+1), 0, 1); |
| test(Iter(ia), Iter(ia+1), 10, 11); |
| test(Iter(ia), Iter(ia+2), 0, 3); |
| test(Iter(ia), Iter(ia+2), 10, 13); |
| test(Iter(ia), Iter(ia+sa), 0, 21); |
| test(Iter(ia), Iter(ia+sa), 10, 31); |
| } |
| |
| int main(int, char**) |
| { |
| test<input_iterator<const int*> >(); |
| test<forward_iterator<const int*> >(); |
| test<bidirectional_iterator<const int*> >(); |
| test<random_access_iterator<const int*> >(); |
| test<const int*>(); |
| |
| return 0; |
| } |